AVR-Chat

On Wed, Jun 24, 2009 at 05:35:29AM -0000, Kevin Madden wrote:
> I have a automobile interface PC to PCM that I am trying to reverse engineer, the microcontroller is an ATmega 323L, I want to modify the firmware controlling the processor. I gave myself a quick lesson in ISP Programming. I now know that I know enough to get myself in trouble. I am looking for help and am willing to pay in order to avoid the inevitable pitfalls. any takers? 
> 
> 

Well the first thing you could do is try to read the code out of the
part such that you could modify it.  However, more than likely the part
is secured and you won't be able to read it at all.  There really isn't
an risk to trying to read it.  On the other hand, make sure you don't
erase it.